Bike frame



FIG. 1 is a perspective view of a bike frame in accordance to one embodiment of the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines showing portions in the drawings are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a bike frame, as shown and described. 